Definition: In this task, you are given inputs i,j, and A, where i and j are integers and A is a list. You need to return the sum of all the numerical elements in the list A between the positions i and j (including positions i and j). Return 0 if no numerical element is present in the list between the given ranges. i and j will be non-negative, and will always have a value less than the length of A. i will always be less than j.
Input: 5, 18, ['T', '9951', 'H', '5155', 'P', '4871', 'h', '7099', 'r', 'V', '5205', 'y', 'k', 'e', 'b', 'h', '3695', 'Y', 'h', 'j', '783']

20870